1969 Volume 42 Issue 10 Pages 2870-2873
A new, simple and rapid method for determining chlorine in chlorine-containing polymers was investigated by means of pyrolysis-gas chromatography. Hydrogen chloride evolved during the thermal degradation of the polymers was eliminated by a NaOH precut column, and only the organic compounds sensitive to flame ionization detector were separated to record the pyrograms. Chlorine content of the polymers was calculated from the relative yield of the degradation products using a theoretical equation deduced from the degradation mechanisms of the polymers. This unique method permits very rapid determination of chlorine with the use of about 0.1 mg of the sample without either the use of calibration curves or weighing of the samples.
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